eplist                 package:edci                 R Documentation

_C_o_n_v_e_r_s_i_o_n _o_f _M_a_t_r_i_c_e_s _r_e_t_u_r_n_e_d _b_y _e_d_g_e_p_o_i_n_t_s

_D_e_s_c_r_i_p_t_i_o_n:

     The matrices returned by 'edgepoints' are converted into a list of
     edgepoints and a list of corresponding angles. This is useful for
     processing the results of 'edgepoints' by 'oregMclust'.

_U_s_a_g_e:

       eplist(data, maxval, test=FALSE, xc=NULL, yc=NULL)

_A_r_g_u_m_e_n_t_s:

    data: list object returned from 'edgepoints'.

  maxval: positive numbers. Critical value for deciding, if an pixel
          belongs to an edge or not.

    test: optional boolean. Must be set to 'TRUE' if 'edgepoints' was
          used with 'estimator="test_mean"' or
          'estimator="test_median"'. Then 'maxval' is the level of the
          test.

   xc,yc: optional numerical vectors defining the coordinates of the
          edgepoints. A pixel with jump height data[[1]][i,j] gets the
          coordinates (xc[i],yc[j]). As default, the coordinates are
          assumed as equidistant within [0,1], e.g. if the matrix of
          jump heights is a n-m-matrix, the pixel at position i,j gets
          the coordinates (i/n,j/m).

_V_a_l_u_e:

     A numerical matrix is returned. The first two columns contain the
     coordinates of the pixels, for which the detected jump height is
     larger than 'maxval' (or smaller then 'maxval', if 'test=TRUE').
     The third column contains the corresponding angles.

_A_u_t_h_o_r(_s):

     Tim Garlipp, garlipp@mathematik.uni-oldenburg.de

_S_e_e _A_l_s_o:

     'edgepoints'

